package EJBTool.persistent.parsers;

import java.util.Arrays;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClassifier;
import org.eclipse.emf.ecore.EDataType;
import org.eclipse.emf.ecore.EEnum;
import org.eclipse.emf.ecore.EEnumLiteral;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.transaction.TransactionalEditingDomain;
import org.eclipse.emf.transaction.util.TransactionUtil;
import org.eclipse.gmf.runtime.common.core.command.ICommand;
import org.eclipse.gmf.runtime.common.core.command.UnexecutableCommand;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParser;
import org.eclipse.gmf.runtime.common.ui.services.parser.IParserEditStatus;
import org.eclipse.gmf.runtime.common.ui.services.parser.ParserEditStatus;
import org.eclipse.gmf.runtime.emf.commands.core.command.CompositeTransactionalCommand;
import org.eclipse.gmf.runtime.emf.type.core.commands.SetValueCommand;
import org.eclipse.gmf.runtime.emf.type.core.requests.SetRequest;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.osgi.util.NLS;

/**
 * @generated
 */
public abstract class AbstractParser implements IParser
{

	/**
	 * @generated
	 */
	protected final EAttribute[] features;

	/**
	 * @generated
	 */
	private String viewPattern;

	/**
	 * @generated
	 */
	private String editorPattern;

	/**
	 * @generated
	 */
	private String editPattern;

	/**
	 * @generated
	 */
	public AbstractParser(EAttribute[] features)
	{
		if (features == null || Arrays.asList(features).contains(null))
		{
			throw new IllegalArgumentException();
		}
		this.features = features;
	}

	/**
	 * @generated
	 */
	public String getViewPattern()
	{
		return viewPattern;
	}

	/**
	 * @generated
	 */
	public void setViewPattern(String viewPattern)
	{
		this.viewPattern = viewPattern;
	}

	/**
	 * @generated
	 */
	public String getEditorPattern()
	{
		return editorPattern;
	}

	/**
	 * @generated
	 */
	public void setEditorPattern(String editorPattern)
	{
		this.editorPattern = editorPattern;
	}

	/**
	 * @generated
	 */
	public String getEditPattern()
	{
		return editPattern;
	}

	/**
	 * @generated
	 */
	public void setEditPattern(String editPattern)
	{
		this.editPattern = editPattern;
	}

	/**
	 * @generated
	 */
	public boolean isAffectingEvent(Object event, int flags)
	{
		if (event instanceof Notification)
		{
			return isAffectingFeature(((Notification) event).getFeature());
		}
		return false;
	}

	/**
	 * @generated
	 */
	protected boolean isAffectingFeature(Object feature)
	{
		for (int i = 0; i < features.length; i++)
		{
			if (features[i] == feature)
			{
				return true;
			}
		}
		return false;
	}

	/**
	 * @generated
	 */
	public IContentAssistProcessor getCompletionProcessor(IAdaptable element)
	{
		return null;
	}

	/**
	 * @generated
	 */
	protected Object[] getValues(EObject element)
	{
		Object[] values = new Object[features.length];
		for (int i = 0; i < features.length; i++)
		{
			values[i] = getValue(element, features[i]);
		}
		return values;
	}

	/**
	 * @generated
	 */
	protected Object getValue(EObject element, EAttribute feature)
	{
		Object value = element.eGet(feature);
		Class iClass = feature.getEAttributeType().getInstanceClass();
		if (String.class.equals(iClass))
		{
			if (value == null)
			{
				value = ""; //$NON-NLS-1$
			}
		}
		return value;
	}

	/**
	 * @generated
	 */
	protected ICommand getParseCommand(IAdaptable adapter, Object[] values,
			int flags)
	{
		if (values == null
				|| validateNewValues(values).getCode() != IParserEditStatus.EDITABLE)
		{
			return UnexecutableCommand.INSTANCE;
		}
		EObject element = (EObject) adapter.getAdapter(EObject.class);
		TransactionalEditingDomain editingDomain = TransactionUtil
				.getEditingDomain(element);
		if (editingDomain == null)
		{
			return UnexecutableCommand.INSTANCE;
		}
		CompositeTransactionalCommand command = new CompositeTransactionalCommand(
				editingDomain, "Set Values"); //$NON-NLS-1$
		for (int i = 0; i < values.length; i++)
		{
			command.compose(getModificationCommand(element, features[i],
					values[i]));
		}
		return command;
	}

	/**
	 * @generated
	 */
	protected ICommand getModificationCommand(EObject element,
			EAttribute feature, Object value)
	{
		value = getValidNewValue(feature, value);
		if (value instanceof InvalidValue)
		{
			return UnexecutableCommand.INSTANCE;
		}
		SetRequest request = new SetRequest(element, feature, value);
		return new SetValueCommand(request);
	}

	/**
	 * @generated
	 */
	protected IParserEditStatus validateNewValues(Object[] values)
	{
		if (values.length != features.length)
		{
			return ParserEditStatus.UNEDITABLE_STATUS;
		}
		for (int i = 0; i < values.length; i++)
		{
			Object value = getValidNewValue(features[i], values[i]);
			if (value instanceof InvalidValue)
			{
				return new ParserEditStatus(
						EJBTool.persistent.part.EJBToolDiagramEditorPlugin.ID,
						IParserEditStatus.UNEDITABLE, value.toString());
			}
		}
		return ParserEditStatus.EDITABLE_STATUS;
	}

	/**
	 * @generated
	 */
	protected Object getValidNewValue(EAttribute feature, Object value)
	{
		EClassifier type = feature.getEType();
		if (type instanceof EDataType)
		{
			Class iClass = type.getInstanceClass();
			if (Boolean.TYPE.equals(iClass))
			{
				if (value instanceof Boolean)
				{
					// ok
				}
				else if (value instanceof String)
				{
					value = Boolean.valueOf((String) value);
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											iClass.getName()));
				}
			}
			else if (Character.TYPE.equals(iClass))
			{
				if (value instanceof Character)
				{
					// ok
				}
				else if (value instanceof String)
				{
					String s = (String) value;
					if (s.length() == 0)
					{
						value = null;
					}
					else
					{
						value = new Character(s.charAt(0));
					}
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											iClass.getName()));
				}
			}
			else if (Byte.TYPE.equals(iClass))
			{
				if (value instanceof Byte)
				{
					// ok
				}
				else if (value instanceof Number)
				{
					value = new Byte(((Number) value).byteValue());
				}
				else if (value instanceof String)
				{
					String s = (String) value;
					if (s.length() == 0)
					{
						value = null;
					}
					else
					{
						try
						{
							value = Byte.valueOf(s);
						}
						catch (NumberFormatException nfe)
						{
							value = new InvalidValue(
									NLS
											.bind(
													EJBTool.persistent.part.Messages.AbstractParser_WrongStringConversionMessage,
													iClass.getName()));
						}
					}
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											iClass.getName()));
				}
			}
			else if (Short.TYPE.equals(iClass))
			{
				if (value instanceof Short)
				{
					// ok
				}
				else if (value instanceof Number)
				{
					value = new Short(((Number) value).shortValue());
				}
				else if (value instanceof String)
				{
					String s = (String) value;
					if (s.length() == 0)
					{
						value = null;
					}
					else
					{
						try
						{
							value = Short.valueOf(s);
						}
						catch (NumberFormatException nfe)
						{
							value = new InvalidValue(
									NLS
											.bind(
													EJBTool.persistent.part.Messages.AbstractParser_WrongStringConversionMessage,
													iClass.getName()));
						}
					}
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											iClass.getName()));
				}
			}
			else if (Integer.TYPE.equals(iClass))
			{
				if (value instanceof Integer)
				{
					// ok
				}
				else if (value instanceof Number)
				{
					value = new Integer(((Number) value).intValue());
				}
				else if (value instanceof String)
				{
					String s = (String) value;
					if (s.length() == 0)
					{
						value = null;
					}
					else
					{
						try
						{
							value = Integer.valueOf(s);
						}
						catch (NumberFormatException nfe)
						{
							value = new InvalidValue(
									NLS
											.bind(
													EJBTool.persistent.part.Messages.AbstractParser_WrongStringConversionMessage,
													iClass.getName()));
						}
					}
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											iClass.getName()));
				}
			}
			else if (Long.TYPE.equals(iClass))
			{
				if (value instanceof Long)
				{
					// ok
				}
				else if (value instanceof Number)
				{
					value = new Long(((Number) value).longValue());
				}
				else if (value instanceof String)
				{
					String s = (String) value;
					if (s.length() == 0)
					{
						value = null;
					}
					else
					{
						try
						{
							value = Long.valueOf(s);
						}
						catch (NumberFormatException nfe)
						{
							value = new InvalidValue(
									NLS
											.bind(
													EJBTool.persistent.part.Messages.AbstractParser_WrongStringConversionMessage,
													iClass.getName()));
						}
					}
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											iClass.getName()));
				}
			}
			else if (Float.TYPE.equals(iClass))
			{
				if (value instanceof Float)
				{
					// ok
				}
				else if (value instanceof Number)
				{
					value = new Float(((Number) value).floatValue());
				}
				else if (value instanceof String)
				{
					String s = (String) value;
					if (s.length() == 0)
					{
						value = null;
					}
					else
					{
						try
						{
							value = Float.valueOf(s);
						}
						catch (NumberFormatException nfe)
						{
							value = new InvalidValue(
									NLS
											.bind(
													EJBTool.persistent.part.Messages.AbstractParser_WrongStringConversionMessage,
													iClass.getName()));
						}
					}
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											iClass.getName()));
				}
			}
			else if (Double.TYPE.equals(iClass))
			{
				if (value instanceof Double)
				{
					// ok
				}
				else if (value instanceof Number)
				{
					value = new Double(((Number) value).doubleValue());
				}
				else if (value instanceof String)
				{
					String s = (String) value;
					if (s.length() == 0)
					{
						value = null;
					}
					else
					{
						try
						{
							value = Double.valueOf(s);
						}
						catch (NumberFormatException nfe)
						{
							value = new InvalidValue(
									NLS
											.bind(
													EJBTool.persistent.part.Messages.AbstractParser_WrongStringConversionMessage,
													iClass.getName()));
						}
					}
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											iClass.getName()));
				}
			}
			else if (type instanceof EEnum)
			{
				if (value instanceof String)
				{
					EEnumLiteral literal = ((EEnum) type)
							.getEEnumLiteralByLiteral((String) value);
					if (literal == null)
					{
						value = new InvalidValue(
								NLS
										.bind(
												EJBTool.persistent.part.Messages.AbstractParser_UnknownLiteralMessage,
												value));
					}
					else
					{
						value = literal.getInstance();
					}
				}
				else
				{
					value = new InvalidValue(
							NLS
									.bind(
											EJBTool.persistent.part.Messages.AbstractParser_UnexpectedValueTypeMessage,
											String.class.getName()));
				}
			}
		}
		return value;
	}

	/**
	 * @generated
	 */
	protected class InvalidValue
	{

		/**
		 * @generated
		 */
		private String description;

		/**
		 * @generated
		 */
		public InvalidValue(String description)
		{
			this.description = description;
		}

		/**
		 * @generated
		 */
		public String toString()
		{
			return description;
		}
	}
}
